{"product_id":"daniel-defense-m4a1-upper-receiver-group-with-14-5-inch-cold-hammer-forged-barrel-in-flat-dark-earth","title":"Daniel Defense M4A1 Upper Receiver Group with 14.5-inch Cold Hammer Forged Barrel in Flat Dark Earth","description":"Daniel Defense M4A1 Upper Receiver, 223 Remington\/5.56 NATO, 14.5 Barrel (16 OAL with Pinned Brake), Carbine-Length Gas System, 1:7 Twist, M4 12.0 Rail, Flat Dark Earth Finish, Fits AR-15 23-004-13150\n\u003cp\u003eThe Daniel Defense M4A1 Upper Receiver Group combines precision engineering with military-grade durability. Featuring the innovative M4A1 Rail Interface System (RIS II), this two-piece, free-floating rail allows for versatile mounting of accessories such as grenade launchers without impacting barrel harmonics, ensuring consistent accuracy. The RIS II system is supported by a robust bolt-up design utilizing six grade 8 bolts, providing a secure attachment point while maintaining the barrel's free-floating status for optimal performance. The entire upper is finished in a sleek Flat Dark Earth color, blending tactical utility with aesthetic appeal. The upper receiver is equipped with a 14.5-inch Cold Hammer Forged M4 profile barrel, which is permanently attached to meet the 16-inch length requirement, and features a Daniel Defense Improved Flash Suppressor for enhanced muzzle control. This system is designed for reliability in demanding environments and is ideal for users seeking a high-quality upgrade or replacement for their existing firearm. The M4A1 model includes a standard M16 profile bolt carrier group, ensuring compatibility and dependable operation across various scenarios. Built with precision and durability in mind, this upper receiver group offers a significant upgrade for tactical operators, firearms enthusiasts, or professional shooters looking for a dependable component that delivers superior accuracy and modular capability.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eM4A1 Rail Interface System (RIS II): Two-piece, free-floating design for stable accessory mounting without affecting barrel harmonics\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBolt-up System: Supports attached devices securely with six grade 8 bolts for maximum strength and stability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBarrel: 14.5-inch Cold Hammer Forged M4 profile with permanent Daniel Defense Improved Flash Suppressor\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBarrel Length: Pinned to meet the 16-inch overall length requirement for compliance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCaliber: 223 Remington for versatile use and reliable performance in various applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eColor: Flat Dark Earth finish provides tactical concealment and aesthetic appeal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatibility: Includes standard M16 profile bolt carrier group for dependable operation\u003c\/li\u003e\u003c\/ul\u003e","brand":"Daniel Defense","offers":[{"title":"Default Title","offer_id":46528201130181,"sku":"815604016612","price":1544.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/9484\/5637\/files\/5923998.jpg?v=1783908666","url":"https:\/\/irondesertarmory.com\/products\/daniel-defense-m4a1-upper-receiver-group-with-14-5-inch-cold-hammer-forged-barrel-in-flat-dark-earth","provider":"Iron Desert Armory","version":"1.0","type":"link"}